Successful endeavour: SpaceX lands in the Gulf of Mexico off the coast of Pensacola, Florida after 64 days in space.

SpaceX capsule with NASA crew safely home

Virus relative: In early February, Chinese researchers had found that SARS-CoV-2 is most closely related to RaTG13 sarbecovirus, which was isolated from a horseshoe bat in Yunnan province in 2013.

Novel coronavirus circulated unnoticed in bats for decades, study says

R. Prasad
Variants: Studies indicate that different alleles may be involved in different populations.

Gene variants and susceptibility to schizophrenia

Shubashree Desikan

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Strategy wise: Countries implementing national social distancing policy showed greater reductions in transmision compared to those with regional policies.

Study finds physical distancing linked to drop in coronavirus spread

High grade: A ventilator has to be exactly calibrated or it can cause altered pressure changes.

Ventilators can heal but also harm

M.R. Rajagopal

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